50 kVA Automatic Voltage Stabilizer, Single Phase, 110V~240V

Note: The provided 50 kVA voltage stabilizer is 1-phase (L, N, G) by European standard. We can customize the split phase (L1, L2 + G) like the USA standard, just confirm with us by email after ordering.

Q1: What is the key advantage of a servo-motor type stabilizer over the relay type you offer?

The core advantage is precision and quality of correction. Relay stabilizers make discrete, stepped voltage adjustments, which can cause minor output fluctuations. Servo-Motor stabilizers provide continuous, smooth, and stepless correction via the moving carbon brush. This results in:

• Higher Precision: Tighter and more consistent output voltage regulation.
• Superior Output Waveform: Minimal introduction of harmonic distortion.
• No Audible "Clicking": Quiet operation, as there are no relays constantly switching.
• Better for Extremely Sensitive Loads: Essential for equipment like medical imaging, laser systems, and high-end audio/video gear.

Q2: How does the "immunity to supply frequency variation" feature work, and why is it important?

This stabilizer's control and regulation circuitry is designed to operate independently of the AC supply frequency. Whether the grid runs at 50Hz, 60Hz, or experiences temporary frequency drift (common with backup generators), the stabilizer's output voltage accuracy and response speed remain constant. This is crucial because frequency-dependent stabilizers can malfunction or provide inadequate correction during frequency shifts, leaving your equipment vulnerable. Our design guarantees consistent protection regardless of grid frequency stability.

Q3: What kind of maintenance does the servo-motor and carbon brush system require?

Servo-motor stabilizers are designed for robust, long-term operation but do require periodic professional maintenance to ensure optimal performance, unlike largely maintenance-free relay types. Key maintenance aspects include:

• Carbon Brush Inspection/Replacement: The carbon brush is a wear item. Its condition should be checked annually (depending on usage) and replaced when worn to a specified limit to maintain good electrical contact and prevent arcing.
• Servo Mechanism Servicing: The motor and gears should be inspected for smooth operation and lubricated as per the manufacturer's schedule.
• Dust Control: The unit should be kept in a clean environment, as carbon dust and general debris can affect the contact surface and moving parts.